President Donald Trump on Sunday went after Tennessee Sen.
Bob Corker, who recently announced that he would retire and not
run for reelection next year.

"Senator Bob Corker "begged" me to endorse him for
re-election in Tennessee," Trump wrote in a
pair of tweets. "I
said 'NO' and he dropped out (said he could not win without...my
endorsement). He also wanted to be Secretary of State, I said 'NO
THANKS.' He is also largely responsible for the horrendous Iran
Deal!"

He added in another follow-up tweet:
"Hence, I would fully expect Corker to be a negative voice and
stand in the way of our great agenda. Didn't have the guts to
run!"

Corker hit back at President Donald Trump on
Sunday, tweeting that it was a "shame the White
House has become an adult day care center."

"Someone obviously missed their shift this morning," Corker
added.

Corker has been increasingly critical of the president
and the GOP's agenda in recent weeks.

And at a Senate Budget Committee hearing earlier,
Corker was vocal about his
concerns about the Republican tax plan that he
worried could balloon the federal deficit.

"Unless it reduces deficits — let me say that one more time
— unless it reduces deficits and does not add to deficits with
reasonable and responsible growth models, and unless we can make
it permanent, I don't have any interest in it," Corker said at
the hearing.

Republicans hold a slim 52-vote majority in the Senate and
can only afford to lose two votes to pass a tax overhaul, which
is why Corker's vote is crucial.